EP 1538551 B1 20121107 - READER/WRITER AND AUTOMATIC TICKET CHECKER FOR CHECKING TICKET BY READER/WRITER
Title (en)
READER/WRITER AND AUTOMATIC TICKET CHECKER FOR CHECKING TICKET BY READER/WRITER
Title (de)
LESER/SCHREIBER UND AUTOMATISCHER TICKETPRÜFER ZUM PRÜFEN VON TICKETS DURCH LESER/SCHREIBER
Title (fr)
DISPOSITIF DE LECTURE/ECRITURE ET DISPOSITIF DE VERIFICATION AUTOMATIQUE DE TICKET QUI SERT A VERIFIER UN TICKET DANS UN DISPOSITIF DE LECTURE/ECRITURE
Publication
Application
Priority
- JP 0311571 W 20030910
- JP 2002267915 A 20020913
Abstract (en)
[origin: US2005001026A1] An antenna unit prevents a communication error by suppressing side lobes formed by an antenna coil segment of a reader/writer device. The antenna unit (200) is used for a reader/writer device (20) whose signal processing circuits (210) and (220) communicate with an IC card (10) via electromagnetic waves, wherein an antenna coil (100) of the IC card (10) relatively gets close to the antenna unit (200). The antenna unit (200) includes the antenna coil segment which forms a loop antenna (202) on a substrate (201) and conductor segments (203) at the periphery of the antenna coil on substantially the same plane of the antenna coil.
IPC 8 full level
G06K 7/08 (2006.01); G06K 7/10 (2006.01); G06K 17/00 (2006.01); H01Q 1/22 (2006.01); H01Q 1/38 (2006.01); H01Q 7/00 (2006.01); H01Q 19/28 (2006.01); H04B 5/02 (2006.01)
CPC (source: EP US)
G06K 7/10316 (2013.01 - EP US); G06K 7/10336 (2013.01 - EP US); G06K 7/10346 (2013.01 - EP US); H01Q 1/2216 (2013.01 - EP US); H01Q 1/38 (2013.01 - EP US); H01Q 7/00 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 2005001026 A1 20050106; US 7004399 B2 20060228; CN 100350423 C 20071121; CN 1596416 A 20050316; EP 1538551 A1 20050608; EP 1538551 A4 20051214; EP 1538551 B1 20121107; HK 1075114 A1 20051202; JP 2004112020 A 20040408; JP 4114446 B2 20080709; WO 2004025547 A1 20040325
DOCDB simple family (application)
US 49446304 A 20040909; CN 03801679 A 20030910; EP 03795371 A 20030910; HK 05107396 A 20050823; JP 0311571 W 20030910; JP 2002267915 A 20020913